Does this trend reflect the dumbing down of B&N or its customers?
if it’s about how to use MS Word, a google search or youtube video will probably tell me what I need to know.
Why on earth would a book store carry any relevant computer technical books nowadays?
Because books can explain concepts better than any other medium. Books aren't great for reference/howto because that info goes out of date quickly. E.g. I'm not going to buy a book about browser APIs, I'll use MDN. But I will buy a book about SPA design or HCI. I'll certainly buy a book about a topic like performance analysis or comparing different approaches to ORMs or practical cryptography. The specific libraries will go out of date quickly, but the concepts will be useful for a very long time (and even the specifics will be at least somewhat correct for longer than you'd expect).
Like everyone else, technical people have had their attention span removed, segmented, and captured by capital such that "sitting down and reading a book (about a technical subject)" is met with horror. There is hope: the brain is quite plastic and even if you've let yours soak in the sensation stew of your phone 8 hours a day for years now, you can regain this important function soon enough. A well-written tech book is such a pleasure! A long narrative, coherent and filled with nuance...it's an important style of communication and I don't think we want to lose it.
That's before we consider that such technical books are going to be a niche within a niche, in other words, not something to put in a mainstream book store.
Historically you might have even needed to find out specialist bookstores for such books or had them ordered specially via the bookstore.
Oh, sorry. It's because book stores want to carry books that are relevant. There is a catch-22 in what you say, because you're right that we've gotten used to buying books online (alibris, not amazon please) which makes bookstores carry them less, which makes us less likely to buy them in bookstores... The spiral downward is real; the opposite, a spiral upward, can also be real with a little effort. Bookstores are filled with books about niche interests, why not ours?
And for more complex matters, a good youtube video is superior. Modern software can have extremely complex interfaces. It's much easier to follow along with a Blender video than to gain the same knowledge from a book.
Plus, it makes my home office feel more in tune with my profession. I like to see the books on the shelf and leaf through them while waiting for my CI to build.
I used to buy computer books there, but I mostly buy Manning ebooks now.
https://www.barnesandnoblekitchen.com/locations/
To me, it makes sense to get rid of the full kitchen but keep the coffee, beer, and wine.
The old building has been replaced by a bizarre wrinkly pink-ish box.
I haven't been for years. I'm curious if it's gone more mainstream.